/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/nla-digbench-scaling/hard-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:52:30,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:52:30,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:52:30,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:52:30,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:52:30,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:52:30,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:52:30,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:52:30,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:52:30,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:52:30,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:52:30,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:52:30,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:52:30,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:52:30,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:52:30,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:52:30,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:52:30,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:52:30,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:52:30,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:52:30,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:52:30,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:52:30,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:52:30,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:52:30,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 20:52:30,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 20:52:30,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 20:52:30,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 20:52:30,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 20:52:30,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 20:52:30,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 20:52:30,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 20:52:30,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 20:52:30,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 20:52:30,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 20:52:30,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 20:52:30,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 20:52:30,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 20:52:30,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:52:30,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:52:30,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:52:30,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:52:30,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:52:30,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:52:30,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:52:30,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:52:30,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:52:30,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:52:30,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:52:30,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:52:30,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:52:30,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:52:30,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:52:30,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:52:30,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:52:30,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:52:30,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:52:30,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:52:30,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:52:30,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:52:30,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:52:30,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:52:30,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:52:30,852 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:52:30,852 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:52:31,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:52:31,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:52:31,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:52:31,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:52:31,163 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:52:31,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound10.c [2021-05-02 20:52:31,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f750eaabe/7607df5ebefa4a81a60d7d4b77bb2753/FLAG9858a9c7b [2021-05-02 20:52:31,593 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:52:31,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound10.c [2021-05-02 20:52:31,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f750eaabe/7607df5ebefa4a81a60d7d4b77bb2753/FLAG9858a9c7b [2021-05-02 20:52:31,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f750eaabe/7607df5ebefa4a81a60d7d4b77bb2753 [2021-05-02 20:52:31,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:52:31,612 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:52:31,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:52:31,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:52:31,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:52:31,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fea4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31, skipping insertion in model container [2021-05-02 20:52:31,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:52:31,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:52:31,730 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound10.c[546,559] [2021-05-02 20:52:31,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:52:31,749 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:52:31,759 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound10.c[546,559] [2021-05-02 20:52:31,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:52:31,785 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:52:31,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31 WrapperNode [2021-05-02 20:52:31,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:52:31,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:52:31,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:52:31,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:52:31,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... [2021-05-02 20:52:31,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:52:31,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:52:31,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:52:31,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:52:31,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:52:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:52:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:52:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:52:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:52:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:52:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:52:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:52:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:52:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:52:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:52:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:52:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:52:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:52:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:52:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:52:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:52:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:52:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:52:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:52:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:52:32,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:52:32,270 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:52:32,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:52:32 BoogieIcfgContainer [2021-05-02 20:52:32,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:52:32,272 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:52:32,272 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:52:32,273 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:52:32,275 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:52:32" (1/1) ... [2021-05-02 20:52:32,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:52:32 BasicIcfg [2021-05-02 20:52:32,290 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:52:32,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:52:32,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:52:32,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:52:32,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:52:31" (1/4) ... [2021-05-02 20:52:32,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f84335d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:52:32, skipping insertion in model container [2021-05-02 20:52:32,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:52:31" (2/4) ... [2021-05-02 20:52:32,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f84335d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:52:32, skipping insertion in model container [2021-05-02 20:52:32,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:52:32" (3/4) ... [2021-05-02 20:52:32,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f84335d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:52:32, skipping insertion in model container [2021-05-02 20:52:32,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:52:32" (4/4) ... [2021-05-02 20:52:32,297 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound10.cJordan [2021-05-02 20:52:32,308 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:52:32,312 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:52:32,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:52:32,352 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:52:32,352 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:52:32,352 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:52:32,352 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:52:32,353 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:52:32,353 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:52:32,353 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:52:32,353 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:52:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 20:52:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 20:52:32,377 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:32,378 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:32,378 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash 79654685, now seen corresponding path program 1 times [2021-05-02 20:52:32,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:32,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973614057] [2021-05-02 20:52:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:52:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:32,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:52:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:52:32,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:32,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973614057] [2021-05-02 20:52:32,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973614057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:32,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:32,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:52:32,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794761927] [2021-05-02 20:52:32,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:52:32,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:32,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:52:32,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:52:32,598 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:52:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:32,733 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-05-02 20:52:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:52:32,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 20:52:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:32,743 INFO L225 Difference]: With dead ends: 38 [2021-05-02 20:52:32,743 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 20:52:32,744 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:52:32,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 20:52:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-05-02 20:52:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:52:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-05-02 20:52:32,783 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2021-05-02 20:52:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:32,783 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-05-02 20:52:32,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:52:32,784 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-05-02 20:52:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 20:52:32,784 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:32,784 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:32,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:52:32,785 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:32,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:32,785 INFO L82 PathProgramCache]: Analyzing trace with hash -85369733, now seen corresponding path program 1 times [2021-05-02 20:52:32,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:32,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072022140] [2021-05-02 20:52:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:52:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:52:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:52:32,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:32,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072022140] [2021-05-02 20:52:32,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072022140] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:32,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:32,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:52:32,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851295262] [2021-05-02 20:52:32,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:52:32,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:32,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:52:32,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:52:32,962 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:52:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:33,250 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2021-05-02 20:52:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:52:33,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 20:52:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:33,253 INFO L225 Difference]: With dead ends: 45 [2021-05-02 20:52:33,253 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 20:52:33,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:52:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 20:52:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-05-02 20:52:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:52:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-05-02 20:52:33,268 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 18 [2021-05-02 20:52:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:33,268 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-05-02 20:52:33,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 20:52:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-05-02 20:52:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 20:52:33,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:33,269 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:33,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 20:52:33,269 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:33,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1527809342, now seen corresponding path program 1 times [2021-05-02 20:52:33,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:33,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198703642] [2021-05-02 20:52:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:33,288 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:33,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567625771] [2021-05-02 20:52:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:33,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 20:52:33,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:33,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:33,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:33,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:52:33,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:33,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198703642] [2021-05-02 20:52:33,471 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:33,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567625771] [2021-05-02 20:52:33,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567625771] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:33,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:33,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 20:52:33,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176359081] [2021-05-02 20:52:33,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 20:52:33,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 20:52:33,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:52:33,473 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:52:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:33,482 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-05-02 20:52:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 20:52:33,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 20:52:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:33,483 INFO L225 Difference]: With dead ends: 38 [2021-05-02 20:52:33,483 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 20:52:33,484 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:52:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 20:52:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 20:52:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:52:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-05-02 20:52:33,489 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 20 [2021-05-02 20:52:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:33,489 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-05-02 20:52:33,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 20:52:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-05-02 20:52:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 20:52:33,490 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:33,490 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:33,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 20:52:33,708 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2128444854, now seen corresponding path program 1 times [2021-05-02 20:52:33,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:33,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652600622] [2021-05-02 20:52:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:52:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:52:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:33,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-02 20:52:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 20:52:33,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:33,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652600622] [2021-05-02 20:52:33,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652600622] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:33,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:33,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:52:33,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297351701] [2021-05-02 20:52:33,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:52:33,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:33,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:52:33,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:52:33,837 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:52:34,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:34,058 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2021-05-02 20:52:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:52:34,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 20:52:34,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:34,061 INFO L225 Difference]: With dead ends: 50 [2021-05-02 20:52:34,061 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 20:52:34,062 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:52:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 20:52:34,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2021-05-02 20:52:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:52:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 20:52:34,072 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 23 [2021-05-02 20:52:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:34,072 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 20:52:34,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 20:52:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 20:52:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:52:34,074 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:34,074 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:34,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 20:52:34,075 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash 135546551, now seen corresponding path program 1 times [2021-05-02 20:52:34,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:34,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114603062] [2021-05-02 20:52:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:34,097 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:34,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279699149] [2021-05-02 20:52:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:34,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:52:34,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 20:52:34,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:34,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114603062] [2021-05-02 20:52:34,322 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:34,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279699149] [2021-05-02 20:52:34,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279699149] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:34,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:34,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:52:34,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457930678] [2021-05-02 20:52:34,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:52:34,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:52:34,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:52:34,328 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:52:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:34,471 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-05-02 20:52:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:52:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2021-05-02 20:52:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:34,472 INFO L225 Difference]: With dead ends: 61 [2021-05-02 20:52:34,473 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 20:52:34,473 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:52:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 20:52:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 20:52:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 38 states have internal predecessors, (44), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:52:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2021-05-02 20:52:34,479 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 28 [2021-05-02 20:52:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:34,479 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2021-05-02 20:52:34,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 20:52:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2021-05-02 20:52:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 20:52:34,480 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:34,480 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:34,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:34,697 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:34,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:34,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1016025214, now seen corresponding path program 1 times [2021-05-02 20:52:34,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:34,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668292988] [2021-05-02 20:52:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:34,706 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:34,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272656653] [2021-05-02 20:52:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:34,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:52:34,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:34,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:52:34,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:34,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668292988] [2021-05-02 20:52:34,864 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:34,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272656653] [2021-05-02 20:52:34,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272656653] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:34,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:34,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 20:52:34,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939267378] [2021-05-02 20:52:34,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:52:34,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:34,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:52:34,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:52:34,866 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:52:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:34,898 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-05-02 20:52:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 20:52:34,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-05-02 20:52:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:34,900 INFO L225 Difference]: With dead ends: 69 [2021-05-02 20:52:34,900 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 20:52:34,900 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:52:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 20:52:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-02 20:52:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 20:52:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-05-02 20:52:34,905 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 36 [2021-05-02 20:52:34,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:34,905 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-05-02 20:52:34,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:52:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-05-02 20:52:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 20:52:34,906 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:34,906 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:35,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:35,129 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:35,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1017127481, now seen corresponding path program 1 times [2021-05-02 20:52:35,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:35,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815528412] [2021-05-02 20:52:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:35,138 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:35,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297334654] [2021-05-02 20:52:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:35,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 20:52:35,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:35,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:52:35,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:35,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815528412] [2021-05-02 20:52:35,456 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:35,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297334654] [2021-05-02 20:52:35,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297334654] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:35,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:35,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 20:52:35,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080128025] [2021-05-02 20:52:35,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:52:35,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:35,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:52:35,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:52:35,457 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:52:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:35,636 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2021-05-02 20:52:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:52:35,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-05-02 20:52:35,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:35,639 INFO L225 Difference]: With dead ends: 72 [2021-05-02 20:52:35,639 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 20:52:35,641 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:52:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 20:52:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 20:52:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:52:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2021-05-02 20:52:35,655 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 36 [2021-05-02 20:52:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:35,655 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2021-05-02 20:52:35,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:52:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2021-05-02 20:52:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 20:52:35,658 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:35,658 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:35,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:35,859 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1880362404, now seen corresponding path program 1 times [2021-05-02 20:52:35,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:35,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212224976] [2021-05-02 20:52:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:35,868 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:35,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351324882] [2021-05-02 20:52:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:35,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 20:52:35,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:35,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:52:35,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:35,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212224976] [2021-05-02 20:52:35,996 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:35,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351324882] [2021-05-02 20:52:35,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351324882] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:35,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:35,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 20:52:35,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526593915] [2021-05-02 20:52:35,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 20:52:35,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:35,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 20:52:35,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:52:35,999 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:52:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:36,037 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-05-02 20:52:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:52:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2021-05-02 20:52:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:36,039 INFO L225 Difference]: With dead ends: 60 [2021-05-02 20:52:36,039 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 20:52:36,039 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:52:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 20:52:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 20:52:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:52:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2021-05-02 20:52:36,056 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 38 [2021-05-02 20:52:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:36,058 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2021-05-02 20:52:36,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 20:52:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2021-05-02 20:52:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 20:52:36,059 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:36,059 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:36,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:36,275 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:36,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1525733273, now seen corresponding path program 1 times [2021-05-02 20:52:36,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:36,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399430869] [2021-05-02 20:52:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:36,283 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:36,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128208286] [2021-05-02 20:52:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 20:52:36,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:36,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-05-02 20:52:36,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:36,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399430869] [2021-05-02 20:52:36,580 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:36,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128208286] [2021-05-02 20:52:36,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128208286] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:36,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:36,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:52:36,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813527938] [2021-05-02 20:52:36,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:52:36,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:36,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:52:36,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:52:36,581 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:52:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:36,832 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2021-05-02 20:52:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:52:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2021-05-02 20:52:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:36,833 INFO L225 Difference]: With dead ends: 87 [2021-05-02 20:52:36,833 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 20:52:36,833 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:52:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 20:52:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-05-02 20:52:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 54 states have internal predecessors, (62), 21 states have call successors, (21), 11 states have call predecessors, (21), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 20:52:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2021-05-02 20:52:36,838 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 46 [2021-05-02 20:52:36,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:36,838 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2021-05-02 20:52:36,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:52:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2021-05-02 20:52:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:52:36,846 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:36,846 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:37,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:37,054 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1447419744, now seen corresponding path program 1 times [2021-05-02 20:52:37,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:37,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265682340] [2021-05-02 20:52:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:37,064 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:37,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59374868] [2021-05-02 20:52:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:37,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:52:37,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:37,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:52:37,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:37,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265682340] [2021-05-02 20:52:37,268 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:37,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59374868] [2021-05-02 20:52:37,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59374868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:37,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:37,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:52:37,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110294916] [2021-05-02 20:52:37,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:52:37,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:37,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:52:37,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:52:37,269 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:52:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:37,305 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2021-05-02 20:52:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 20:52:37,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2021-05-02 20:52:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:37,308 INFO L225 Difference]: With dead ends: 93 [2021-05-02 20:52:37,308 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 20:52:37,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:52:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 20:52:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-05-02 20:52:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 60 states have internal predecessors, (67), 21 states have call successors, (21), 13 states have call predecessors, (21), 12 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 20:52:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2021-05-02 20:52:37,319 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 54 [2021-05-02 20:52:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:37,320 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2021-05-02 20:52:37,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:52:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2021-05-02 20:52:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:52:37,322 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:37,322 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:37,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 20:52:37,542 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:37,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1448522011, now seen corresponding path program 1 times [2021-05-02 20:52:37,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:37,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758567855] [2021-05-02 20:52:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:37,555 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:37,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107622351] [2021-05-02 20:52:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:37,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:52:37,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:37,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-02 20:52:37,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:37,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758567855] [2021-05-02 20:52:37,991 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:37,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107622351] [2021-05-02 20:52:37,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107622351] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:37,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:37,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:52:37,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464713425] [2021-05-02 20:52:37,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:52:37,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:37,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:52:37,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:52:37,992 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-02 20:52:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:38,243 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2021-05-02 20:52:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:52:38,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 54 [2021-05-02 20:52:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:38,244 INFO L225 Difference]: With dead ends: 96 [2021-05-02 20:52:38,245 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 20:52:38,245 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 175.6ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:52:38,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 20:52:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 20:52:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 59 states have internal predecessors, (65), 18 states have call successors, (18), 14 states have call predecessors, (18), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 20:52:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-02 20:52:38,248 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 54 [2021-05-02 20:52:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:38,249 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-02 20:52:38,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-02 20:52:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-02 20:52:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-02 20:52:38,249 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:38,250 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:38,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 20:52:38,457 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:38,458 INFO L82 PathProgramCache]: Analyzing trace with hash -161321978, now seen corresponding path program 2 times [2021-05-02 20:52:38,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:38,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134469575] [2021-05-02 20:52:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:38,465 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:38,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666721406] [2021-05-02 20:52:38,465 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:38,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-02 20:52:38,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:52:38,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 20:52:38,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:38,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-05-02 20:52:38,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:38,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134469575] [2021-05-02 20:52:38,632 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:38,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666721406] [2021-05-02 20:52:38,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666721406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:52:38,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:52:38,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 20:52:38,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743680422] [2021-05-02 20:52:38,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:52:38,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:38,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:52:38,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:52:38,634 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:52:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:38,702 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2021-05-02 20:52:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:52:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2021-05-02 20:52:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:38,703 INFO L225 Difference]: With dead ends: 102 [2021-05-02 20:52:38,703 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 20:52:38,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:52:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 20:52:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-05-02 20:52:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 67 states have internal predecessors, (75), 21 states have call successors, (21), 15 states have call predecessors, (21), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 20:52:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2021-05-02 20:52:38,709 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 56 [2021-05-02 20:52:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:38,710 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2021-05-02 20:52:38,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:52:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2021-05-02 20:52:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 20:52:38,711 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:38,711 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:38,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:38,925 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:38,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1294763379, now seen corresponding path program 1 times [2021-05-02 20:52:38,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:38,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830332212] [2021-05-02 20:52:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:38,936 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:38,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781132617] [2021-05-02 20:52:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:38,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:52:38,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:39,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 36 proven. 46 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 20:52:39,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:39,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830332212] [2021-05-02 20:52:39,100 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:39,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781132617] [2021-05-02 20:52:39,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781132617] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:39,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:39,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:52:39,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139429778] [2021-05-02 20:52:39,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:52:39,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:39,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:52:39,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:52:39,101 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:52:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:39,148 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-05-02 20:52:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:52:39,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 61 [2021-05-02 20:52:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:39,150 INFO L225 Difference]: With dead ends: 103 [2021-05-02 20:52:39,150 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 20:52:39,150 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:52:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 20:52:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-05-02 20:52:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 69 states have internal predecessors, (77), 21 states have call successors, (21), 15 states have call predecessors, (21), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 20:52:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-05-02 20:52:39,154 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 61 [2021-05-02 20:52:39,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:39,154 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-05-02 20:52:39,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:52:39,154 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-05-02 20:52:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 20:52:39,155 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:39,155 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:39,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:39,361 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:39,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1774996485, now seen corresponding path program 2 times [2021-05-02 20:52:39,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:39,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42168440] [2021-05-02 20:52:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:39,380 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:39,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149826972] [2021-05-02 20:52:39,380 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:39,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:52:39,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:52:39,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 20:52:39,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 43 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-05-02 20:52:39,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:39,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42168440] [2021-05-02 20:52:39,782 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:39,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149826972] [2021-05-02 20:52:39,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149826972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:39,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:39,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 20:52:39,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116336977] [2021-05-02 20:52:39,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 20:52:39,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:39,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 20:52:39,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:52:39,785 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:52:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:40,144 INFO L93 Difference]: Finished difference Result 138 states and 168 transitions. [2021-05-02 20:52:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:52:40,144 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 64 [2021-05-02 20:52:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:40,146 INFO L225 Difference]: With dead ends: 138 [2021-05-02 20:52:40,146 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 20:52:40,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 153.8ms TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:52:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 20:52:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2021-05-02 20:52:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 80 states have (on average 1.175) internal successors, (94), 83 states have internal predecessors, (94), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 20:52:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2021-05-02 20:52:40,152 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 64 [2021-05-02 20:52:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:40,152 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2021-05-02 20:52:40,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:52:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2021-05-02 20:52:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 20:52:40,153 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:40,153 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:40,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 20:52:40,369 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:40,369 INFO L82 PathProgramCache]: Analyzing trace with hash 112143503, now seen corresponding path program 1 times [2021-05-02 20:52:40,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:40,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201467266] [2021-05-02 20:52:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:40,379 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:40,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416397768] [2021-05-02 20:52:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:40,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 20:52:40,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:40,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-05-02 20:52:40,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:40,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201467266] [2021-05-02 20:52:40,584 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:40,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416397768] [2021-05-02 20:52:40,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416397768] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:40,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:40,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:52:40,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444302341] [2021-05-02 20:52:40,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:52:40,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:40,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:52:40,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:52:40,586 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:52:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:40,663 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2021-05-02 20:52:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:52:40,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-05-02 20:52:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:40,667 INFO L225 Difference]: With dead ends: 138 [2021-05-02 20:52:40,667 INFO L226 Difference]: Without dead ends: 138 [2021-05-02 20:52:40,669 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:52:40,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-02 20:52:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-05-02 20:52:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 92 states have internal predecessors, (103), 28 states have call successors, (28), 19 states have call predecessors, (28), 18 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 20:52:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2021-05-02 20:52:40,676 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 68 [2021-05-02 20:52:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:40,676 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2021-05-02 20:52:40,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-02 20:52:40,676 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2021-05-02 20:52:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 20:52:40,677 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:40,677 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:40,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 20:52:40,893 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:40,893 INFO L82 PathProgramCache]: Analyzing trace with hash 113245770, now seen corresponding path program 1 times [2021-05-02 20:52:40,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:40,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980879908] [2021-05-02 20:52:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:40,899 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:40,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977906893] [2021-05-02 20:52:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:40,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 20:52:40,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:41,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-05-02 20:52:41,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:41,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980879908] [2021-05-02 20:52:41,337 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:41,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977906893] [2021-05-02 20:52:41,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977906893] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:41,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:41,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:52:41,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104820376] [2021-05-02 20:52:41,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:52:41,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:41,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:52:41,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:52:41,338 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 20:52:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:41,553 INFO L93 Difference]: Finished difference Result 149 states and 174 transitions. [2021-05-02 20:52:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:52:41,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 68 [2021-05-02 20:52:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:41,555 INFO L225 Difference]: With dead ends: 149 [2021-05-02 20:52:41,556 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 20:52:41,556 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 142.5ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:52:41,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 20:52:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-05-02 20:52:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 99 states have internal predecessors, (113), 30 states have call successors, (30), 20 states have call predecessors, (30), 19 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 20:52:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2021-05-02 20:52:41,565 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 68 [2021-05-02 20:52:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:41,565 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2021-05-02 20:52:41,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-02 20:52:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2021-05-02 20:52:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 20:52:41,566 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:41,566 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:41,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 20:52:41,785 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2039825082, now seen corresponding path program 2 times [2021-05-02 20:52:41,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:41,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620156902] [2021-05-02 20:52:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:41,795 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:41,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186405856] [2021-05-02 20:52:41,795 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:42,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:52:42,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:52:42,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 20:52:42,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:42,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-05-02 20:52:42,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:52:42,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620156902] [2021-05-02 20:52:42,287 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:52:42,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186405856] [2021-05-02 20:52:42,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186405856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:52:42,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:52:42,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:52:42,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850759088] [2021-05-02 20:52:42,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:52:42,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:52:42,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:52:42,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:52:42,290 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-05-02 20:52:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:52:42,581 INFO L93 Difference]: Finished difference Result 150 states and 171 transitions. [2021-05-02 20:52:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:52:42,582 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 73 [2021-05-02 20:52:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:52:42,582 INFO L225 Difference]: With dead ends: 150 [2021-05-02 20:52:42,582 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 20:52:42,583 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 159.6ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:52:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 20:52:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-05-02 20:52:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.134020618556701) internal successors, (110), 100 states have internal predecessors, (110), 31 states have call successors, (31), 21 states have call predecessors, (31), 20 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 20:52:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2021-05-02 20:52:42,590 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 73 [2021-05-02 20:52:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:52:42,590 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2021-05-02 20:52:42,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-05-02 20:52:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2021-05-02 20:52:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 20:52:42,591 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:52:42,591 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:52:42,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:42,805 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:52:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:52:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash -742748636, now seen corresponding path program 1 times [2021-05-02 20:52:42,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:52:42,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093877365] [2021-05-02 20:52:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:52:42,816 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:52:42,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961262658] [2021-05-02 20:52:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:52:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:52:42,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 20:52:42,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:52:42,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:42,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:43,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:48,860 WARN L205 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2021-05-02 20:52:48,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:48,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:48,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:48,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:48,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:49,284 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-05-02 20:52:49,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:50,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:52:59,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:03,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:04,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:53:33,773 WARN L159 QuantifierPusher]: Ignoring assumption.